Java is a programming language originally developed by Sun Microsystems. Questions here should be about the installation, configuration and troubleshooting a JVM (Java Virtual Machine) or a JRE (Java Runtime Environment). Programming questions (unless directly related to Ubuntu) should be asked ...

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Installing Novell Designer [duplicate]

i try to install Novell Designer 4.0.1 on Ubuntu. But i get the error message: Preparing to install... Extracting the JRE from the installer archive... Unpacking the JRE... Extracting the ...
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20 views

Eclipse IDE looks akward in Ubuntu 13.04 [duplicate]

I have installed Eclipse IDE for Java EE developer and the look and feel of the ide is very awkward. What is the problem? Is there any way to solve this? I am unable to post the screen-shot as I don't ...
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1answer
1k views

Eclipse: Can't import SWT

The error says: "The import org.eclipse cannot be resolved." I've been at this for the past 8 hours, tried just about everything: Swap Workspace Project->Properties->Java Build Path ...
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1answer
717 views

installing netbeans 7.3.1

I get following error /usr/local/java/jdk1.7.0_25/jre/lib/i386/xawt/libmawt.so: libXtst.so.6: cannot open shared object file: No such file or directory Installation stops there. I checked and in the ...
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1answer
1k views

Eclipse no longer useful

When I got my Eclipse from the Ubuntu Software Center, it was good and worked fine. I could work on Java projects fine. This week I was required to add ADT and tried the ADT-bundle, assuming it had ...
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1answer
2k views

How to wrap the application to create sh file in Ubuntu Linux

I have created one java application which takes number of external jar files and also VM arguments passed to it. I want to create .sh file for that application so that I cat run it on any linux ...
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1answer
2k views

JDK x64 fails to unpack in Ubuntu 13.04

New to ubuntu, I have just installed the OS in my VMPlayer. I am trying to install Oracle (Sun) Java 6 onto my Ubuntu 13. As per the instruction given here I download jdk-6u45-linux-x64.bin from the ...
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2answers
102 views

Should I use desktop or server version for my own java+mysql trading system? [duplicate]

I am going to build a trading system with java and mysql but I am not sure should I use desktop or server version. The backtest part would involve a lot of calculation and live trade part requests ...
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2answers
2k views

Error while Running SAP for Java

I have installed SAP 7.3 on Ubuntu 12.04 and it was working fine. but from last few days its not working. Only Splash Screen shows and its goes. I have tried to start with terminal then it shows ...
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1answer
99 views

How do i delete java 7 runtime?

I upgraded to java 7 JDK bur minecraft got a black screen after startup.I found out that java 7 didnt work with linux. when i deleted the JDK, minecraft wouldent even open.every java 7 icon is still ...
0
votes
1answer
390 views

Java 7 JDK wont uninstall

I installed jdk 7 but minecraft didnt work. I tried uninstalling it in many ways but it was still on the machine and minecraft still didnt work. Does anynone know how to fix this? My ubuntu version is ...
2
votes
1answer
958 views

How come I cannot make this file executable (chmod permissions)?

I downloaded Android Development Tool for linux (ADT) and placed it in home directory. After unzipping the files, when I double click the "eclipse" executable file; the eclipse works perfectly fine. ...
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1answer
550 views

ant not working on Ubuntu 12.10

I have installed ant on my ubuntu 12.10. When i try to compile a java project with build.xml, i get the following error: /usr/bin/ant: 1: eval: Syntax error: Unterminated quoted string ls -lrt ...
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1answer
297 views

Ubuntu-Java Installation-Topcoder-“Java not found”

I realized that this might be the dumbest question here, but being a total beginner as I am, I really couldn't figure it out after trying all kinds of instructions I could found on the web. Specs: ...
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1answer
866 views

I am trying to install the Oracle java sdk and jre manually on ubuntu 12.10 [duplicate]

I installed the Oracle jdk1.7.0_25 and the Jre1.7.0_25 on Ubuntu 12.10. I used the install method at http://www.noobslab.com/2012/12/install-oracle-java-7-in-ubuntu.html. When I execute "java ...
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1answer
353 views

Why is OpenJDK not preinstalled?

I don't understand why OpenJDK is not preinstalled. A bunch of applications depend on it and it only takes up 0,7MB. Of course there is the unneeded "OpenJDK Policy Tool" icon but Canonical could ...
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2answers
249 views

Why is python so slow on Raring?

In order to run a few benchmarks on my newly installed 13.04, I wrote the below fibonacci script in python. It basically accepts a number and starts crunching fibonacci numbers that many times: ...
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0answers
3k views

Installing Java On Lubuntu 13.04 [duplicate]

The name says it. I checked other sources, but can't really figure it out. I want to run Java games.
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4answers
81k views

Installing Java 7 Update 25 on 12.04 LTS?

How can I install Java on Ubuntu 12.04? I have: Java(TM) SE Runtime Environment (build 1.7.0_21-b11) Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)
0
votes
1answer
154 views

Frostwire not opening

I have just donwloaded the application FrostWire. I was trying to open it, but it just won't open. The icon does it's flashing, and then it goes back to the normal background, no windows from that app ...
5
votes
4answers
14k views

How to set the default Java version

I have been using Java 6 on Ubuntu 11.10, but now I want to update to version 7. I've installed version 7 via PPA as described here. If I run sudo update-alternatives --config java I get the ...
0
votes
2answers
525 views

Java.Net.ConnectException: connection refused

I am doing my final year project on Java platform under Ubuntu and at first I was getting a permission denied error i.e, java.net.bindexception:permission denied but after increasing the port number ...
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1answer
2k views

IcedTea plugin not working in Midori web browser

I have Lubuntu 13.04, and I use the Midori WebBrowser. I initially had a problem with the plugins, but later on, I could activate Flash and Java. I use the IcedTea browser plugin to view Java content. ...
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votes
1answer
2k views

Installing matlab 2012b on ubuntu 12.10-java error

I have matlab 2012b iso file and I tried mounting it and install ..but i get the following error... root@karthik:/home/karthik# mount -t iso9660 -o loop /home/karthik/Downloads/matlab.iso ...
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1answer
506 views

terminal won't pick up java [duplicate]

Why does the terminal say java doesn't exist?
2
votes
1answer
2k views

JREs from different vendors on the same system

In various tutorials, it is said, that you should remove existing JRE/JDK before installing new one (e.g. remove OpenJDK before installing the one from Oracle). Is it really necessary? I remember ...
2
votes
1answer
1k views

An error occurred while copying a file into an archive folder

I am trying to drag .png files into a folder in a .jar archive. The error additionally occurs with .zips as well. I am running Ubuntu 13.04 on an ext4 filesystem with default filemanager for ...
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2answers
184 views

getting superuser permissions when I'm on an “administrator” account

I'm trying to install the java plugin for mozilla. I have followed the instructions on the java website, but when I try to create the link to the mozilla directory, I get 'permission denied'. I'm ...
16
votes
3answers
42k views

How to install openjdk-7-jdk on Ubuntu 12.04 without dragging in unrelated GUI and sound packages?

Ubuntu 12.04.2 LTS What's going on here? # apt-get install openjdk-7-jdk Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be ...
0
votes
1answer
251 views

Installation of a second Java SDK

I have Java sdk 1.7 installed correctly. It turns out I need the version of 1.6 also (an application needs it). How do I install the version of 1.6 and how do I make sure that we'll both work ...
0
votes
1answer
855 views

Eclipse RCP: SWT Text Focus and default selection(return key) events

I am having a strange problem on my RCP. I don't use Linux to develop so my knowledge for common bugs is very less. I am using Ubuntu 11.10 to try out the RCP. In my RCP, I have an SWT Text that has ...
6
votes
1answer
19k views

How do I get WebEx fully working with Ubuntu 12.04?

I am trying to join a WebEx meeting from Ubuntu 12.04. I can join but I do not see the live chat messages, I hear no sound, and I cannot see the presentation. I have tried using Ubuntu 12.04 64-bit ...
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votes
3answers
13k views

Netbeans install error: The specified jdk folder does not contain jdk

During installation of Netbeans 7.3 I got this message the specified jdk folder does not contain jdk I have openjdk 7 installed on my system using apt-get. I tried to specify the path to ...
0
votes
1answer
114 views

Why can't I install the Java JDK

I ran the script here: https://github.com/flexiondotorg/oab-java6/blob/master/oab-java.sh and it succeed. But why do I get: ryan@palms ~ $ /usr/lib/jvm/java-6-openjdk/bin/java -version java version ...
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votes
1answer
5k views

What are steps to set up Oracle Java EE 6 SDK in Ubuntu?

What are steps to set up Oracle Java EE 6 SDK?
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2answers
191 views

Two Java JDK version is running in my machine

I have the following configuration in my system: 2Gb Ram 64 bit system Linux 12.0.1 The problem is when open the eclipse the system become very slow and if I open chrome it becoming too slow. And ...
0
votes
2answers
486 views

Shutdown does not power off computer with db derby service

I set service db derby by this instructions Fresh Install Ubuntu 12.10 - 17. apache db derby #!/bin/bash # # Startup script for Derby ### BEGIN INIT INFO # Provides: derby # Required-Start: ...
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0answers
497 views

How do I enable the official Java plugin in the latest version of Google Chrome?

I was using Chromium, which runs smoothly, and was forced to upgrade to Chrome (mega.co.nz obliged me to). Now I can't execute applets in Chrome. Checking the installed plugins in both browsers, I see ...
0
votes
1answer
203 views

cant install or uninstall anything after a failed sun-java-6 installation

I've attempted to install sun-java-6 by following a method given in a site which asked me to add a repository and then sudo apt-get install sun-java6-jre. while installing on terminal i cant click ...
0
votes
1answer
375 views

Java Hibernate: Download MySql or LAMP

I am going to be writing a Spring based Java application and I was wondering if I should install MySql directly or should I just install LAMP. I would like to install LAMP, but would this have any ...
2
votes
0answers
159 views

I tried to transplant the wireless_tools to Android4.0 system, but I have a problem with Java

My Linux system is Ubuntu Kylin, a new branch of Ubuntu spreading mainly in China. I have changed some files, such as wireless.22.h, ifrename.c and iwlib.h, in wireless_tools.29/ which is located in ...
7
votes
1answer
38k views

“Please ensure you have JAVA_HOME points to JDK rather than JRE” message

I have java installed aaa@ubuntu:~$ whereis java java: /usr/bin/java /usr/bin/X11/java /usr/local/java /usr/share/java aaa@ubuntu:~$ whereis javac javac: /usr/bin/javac /usr/bin/X11/javac and ...
0
votes
1answer
197 views

How does java check version online

i'd like to know how does java check his version when facing an applet online. Does it phonecalls a particular site? How can i get that site?
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1answer
972 views

Can not install Java [duplicate]

sudo add-apt-repository ppa:ferramroberto/java After this command I am getting error: Error reading https://launchpad.net/api/1.0/~ferramroberto/+archive/java: Couldn't resolve host 'launchpad.net ...
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2answers
988 views

How do I display an html file on a web browser in Ubuntu?

I am tasked with displaying a program on a web browser for my final project. The browser would be run from a cloud instance, and I have chosen to show an java applet that I have made. I have already ...
1
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1answer
3k views

install matlab 2013a with error

I tried to install Matlab2013a in my laptop (Ubuntu system). I download a ISO file (very big) and followed their instruction: mount it and run "install". But it returns me an error: Cannot locate ...
1
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1answer
1k views

smartgit ubuntu 13.04 64bits crash startup

I try to launch smartgit with ubuntu 13.04 but it crash on startup. I tried with openjdk and the oracle java. Here is the error : # # A fatal error has been detected by the Java Runtime ...
2
votes
1answer
354 views

Open ports for development purposes

I'm doing some Java ME Development in my brand-new Ubuntu laptop, coming from a now replaced Windows Vista one. What I'm trying to do is run a Mobile Simulator that acts as an HTTP Server -receives ...
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0answers
395 views

Problem with eclipse after installing ubuntu 12.04 LTS (detailed description)

System specs and code sample in the end of this contribution! First of all, I am new to this forum. Please tell me if there is anything wrong with the layout or the question itself. I am also new to ...
2
votes
2answers
886 views

UnsatisfiedLinkError on xawt when running HEC-HMS.sh

I am a recent adopter of Linux and this problem has got me stumped. I use HEC-HMS and HEC-DSSVue for work on a regular basis. I have been using the widows versions in wine but they are really buggy. ...